Fix: urltest get fastest node ehavior (#326)

hub/route/proxies.go

@@ -9,7 +9,6 @@ import (
 	"time"
 
 	A "github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/common/picker"
 	C "github.com/Dreamacro/clash/constant"
 	T "github.com/Dreamacro/clash/tunnel"
 
@@ -111,21 +110,17 @@ func getProxyDelay(w http.ResponseWriter, r *http.Request) {
 
 	proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
 
-	picker, ctx, cancel := picker.WithTimeout(context.Background(), time.Millisecond*time.Duration(timeout))
+	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*time.Duration(timeout))
 	defer cancel()
-	picker.Go(func() (interface{}, error) {
-		return proxy.URLTest(ctx, url)
-	})
 
-	elm := picker.Wait()
-	if elm == nil {
+	delay, err := proxy.URLTest(ctx, url)
+	if ctx.Err() != nil {
 		render.Status(r, http.StatusGatewayTimeout)
 		render.JSON(w, r, ErrRequestTimeout)
 		return
 	}
 
-	delay := elm.(uint16)
-	if delay == 0 {
+	if err != nil || delay == 0 {
 		render.Status(r, http.StatusServiceUnavailable)
 		render.JSON(w, r, newError("An error occurred in the delay test"))
 		return